#! -*- encoding: utf-8 -*-
import fractions

print("""2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.

What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?""")
print("")

if __name__ == "__main__":
    x = reduce(lambda x,y: x * y / fractions.gcd(x,y) , [11,12,13,14,15,16,17,18,19,20])
    print(x)
